The spinal cord is an extending from the medulla of the brain down to the middle of the back

Which organelles are labeled d, and what is one feature that distinguishes them from the other labeled organelles chloroplasts the only organelles that produce sugars from sunlight mosomes, only found in animal and bacterial cells centricles only found in animal cells mitochondra, the only energo-generating structures found in cells

Which of the organisms listed below performs nitrogen fixation? a. legumes b. plants c. bacteria d. fungi

The greatest increses in energy use occuree between which two stafes of society